Assigbtob of one-half to john f



H. H. GOVE.

VALVE CONSTRUCTION FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FILED MAY 15, 1916. ENEwED Nov. 9, |918.

L@ Patented May 13, m1919.

a@ /3/a /5 /5 42/ 5- Z@ n Mohn/@yf UNTTED STATES PATENT OFFTCE.

HENRY H. GOVELOF LBIEDEFORD, MAINE, ASSIGNOR OF ONE-HALF T0 JOHN F. DEAN, 0F .BIDDEFORD, MAINE.

VALVE CONSTRUCTION E'OR INTERNAL-COMBUSTION ENGINES.

incassa,

Application tiled May 15, 1916, Serial No. 97,458.

To all whom t may concern.'

Be it known that l, HENRY H. Govn, a

`citizen of the 'United States, and resident of Biddeford, in the county of York and State of Maine, have invented an improvement in 'Valve Constructions for Internal-Cembustion Engines, ot which the following description, in connection `with 'the aecompanying drawings, is a specification, like letters on the drawings representingl like parts.

My present invention is an improvement in internal combustion engines, particularly in the valve construction for such engines, and the object of the invention is to simpliiy and Vimprove rotary valves for such engines. ln my development of the rotary val ve construction, as shown in'my copending applications, Ser. Nos. 830,906, filed April 10, 1914, and 20,600, tiled April 12, 1915,

l have illustrated very simple and efficient` lorms of rotary valve and valve casing, compris-ing means to control both the supply and exhaust to one or more cylinders of an internal combustion engine, to provide for independent expansion and contraction of different valve sections, and to provide nevel forms of compression rings and carhen shearing devices. ln the present invention l have still further developed means to insure the smooth and even running of this type oi rotary7 valve mechanism. linportant Jfeatures consist in the improved arrangement. and packing for the exhaust ronduit through the valve, the supply manifold, connections of the adjacent valve sec tions. and arrangement of a plurality of rings cooperating with the carbon shearing and compression member.

Other features of the invention, details of construction and novel combinations of parts will be hereinafter more fully pointed .out and claimed.

Referring tothe drawings illustrating a preferred' embodiment of the invention,

Figure 1 is a cross sectional view through a fragmentary portion of a four cylinder internal combustion engine;

llig42 is a view of one of the rotary valve sections;

Fig. 3 is a cross sectional view along the limx 'lof Fig. 1; I

liig. i is a view in perspective of my im- Specification of Letters Patent.

Patented May 13, 1919. Renewed November e, 191s. Serin no. 261,935.

proved compression and carbon shearing device; and

Fig. 5 is an enlarged cross sectional view of a fragmentary portion of the bearingl betweentlie rotary valve and its casing.

Fig. .6 is a side viewof the valve showing a modiication of spiral oiling groove and compression ring therein.

I have illustrated in diagrammatic term the essential parts only of the top portions of the cylinders in a motor with an arrangement for-the valve and casing formed across the ends of said cylinders, although it will be understood that such valve may be arranged at the side, and maybe employed for an internal combustion engine having only two cylinders, or even one. An engine easing 1 is shown with a plurality of cylinders 2, 3, 4 and 5 having provision tor the usual water jacket 6, said cylinders having ports 7, 8, 9 and 10 respectively, opening into the rotary valve seat 12 formed in the casing 13 extending across all the cylinders and adapted to receive the rotary valve, the seat 12 bein-g of suitable diameter for the valve to tit therein. It will he understood that the valve casing 13 may also contain continuations for the circulation of water in the water jacket 15, as is usual, and may 1oe formed as an integral casting with the engine casting' 1, or be formed separately and boltedl or otherwise secured to the head of said casting 1, both these forms being illus trated in my two prior applications above mentioned.

l prefer to form the rotary valve in sections, thus allowing each section to expand and contract freely and yet uniting all the sections for uniformity in operation and preferably having one section control #two adjacent cylinders. To this end l form the valve sections 16 and 17, the former to control the supply and exhaust for the cylinders 4 and 5 and the latter tor the cylinders 2 and 3, connecting said sections by a dovetailed niortise joint, comprising tongue nieuihers 1S (one only being shown in the drawing) on the section 16 and corresponding sockets 19 on the adjacent end ot the valve sections 17. I prefer to have two or more of such tongues and sockets so arranged around the periphery oiE the abutting valve sections 16 and 17 as to insure a proper assembling of the valve sections and also so that the same `Will permit ready removal. If the section 16, for example, is drawn out endwise from the valve casing, the section 17 will, of course, be brought with it and only one end of the valve casing need be removed. To facilitate this operation and also to provide simple and convenient construction, I form the valve seat 12 entirely 'open .through the casing, bolting a cover and bracket 20 at one end adapted to -conceal and protect the gear 21 Which is removably aflixed to the end of the adjacent valve section 16 and also to further provide a 'bearing for the gear 22 and shaft 23 imparting rotation to the valve from the crankshaft or any suitable source of power in a similar manner to that. explained in my said copending application, Ser. .No. 20,600. The opposite end of the valve seat is closed and protected'loy a cover 24bolted around its edge to the casing, further providing a ball or roller thrust bearing for the rotary valve.

The valve casing is adapted to recei'vel a supply manifold 25 which opens into annular enlargements or recesses 26, 27 and 28 at the middle and adjacent each end of the casing herein shown, the middle recess 27 givingl a supply of fuel Where the abutting ends of the valve sections 16 and 17 are joined by the mortise members above described, said sections being spaced apart to permit of an intake of fuel from the annular passage 27. A flow of fuel into each open endv29 and 30 of said sections is `thus permitted and a supply to the respective ports 8 and 9 at proper times is given. The

closed end of the valve 16 is provided with a plurality of ports 31 in position to pick up the fuel from the annular passage 28 and supply same through the open section 32 of the valve sections 16 to the port l10 of the cylinder 5 at appropriate times to the supply port 33 in the valve. A similar construction com rising the ports 34 in the valve section 1 adjacent the supply passage 2 6 is arranged to-admit the' supply into the port 35 of said valve section for admission through the port 36 to the cylinder 2.

Each section 16 and 17 is similarly constructed, having exhaust conduits in the form of sleeves 37 and 38 respectively, and

openings 39 and 40 through exhaust ports 41 and 42 respectively, as shown in Fig. 1. The conduit y37 has one opening 42 in position to conduct the exhaust from the cylin- .der 5 and the other port 43 to take the exhaust from the cylinder 4. The conduit38 has corresponding ports 44 and 45 for its cylinders 2 and 3. These exhaust ports may be arranged either 'at right angles or any other, for propel' timing of the valve and engine cylinders. as Well as are the intake ports therefor. the arrangement herein illustrated being 011 the ratio of one revolution I take.

around the exhaust conduits, retaining same with Washers 47 `Where necessary, and thus entirely shutting olf the supply portions of each rotary valve section from each other. This arrangement also prevents undue heat and distortion being communicated from the exhaust conduits 37 and 38 to the respective outer portions of the rotary valves where said valves bear upon the face of the valve seat 12. As a still further preventive against undue expansion between the outer bearing. surface of the rotary valve sections and the seat 12 in the casing, I prefer to recess both the seat 12 and the adjacent portions of the rotary valve, at similar points 48 and 49 respectively (see Fig. 1). thus giving a Wide port opening and also insuring against the valve binding or sticking in its rotative movement.

The exhaust ports 41 and 42 I prefer to form with enlarged recesses at the opening of said ports, as indicated at 50, Fig. 3. thus permitting the flow of the exhaust from the adjacent cylinders controlled by an exhaust conduit 37 in the valve section 16, for example, to be almost continuous through successive exhausts of the adjacent cylinders 4 and 5. This construction gives great freedom for the escape of the exhaust gases and insures an easy, rapid and complete scavenging of the cylinders of substantially all the products of combustion prior to the in- In my prior applications I have illustrated and explained my novel form of compression and carbon shearing devices, consisting in a pair of expansible compression ringlike members 51 and 52 connected by a cross bar 110 53 as illustrated in Fig. 4. Said rings and cross bar fit Within appropriate circumferential and longitudinal grooves 54, 55 and 56 respectively in the outer surface of the rotary valve 16 as illustrated in Fig. 5. I 115 have discovered that this combined compression and carbon shearing device operates much more satisfactorily and thoroughly if the cross bar 53 is adjacent the cut 57 in each ring, thus preventing cutting of the rings. and providing better springtension on the cross bar .and less liability to break or injure the devicey than when the cut is danietrically opposite the cross bar especially in assembling. l `urthermore. as this valve rotates in the direction of the arrow in Fig. 4, an edge of the cross bar is presented uppermost. This feature is distinctly novel andvaluable and adds materially to the long life of the valve. I also find it dei lll sirable to form the peripheral recesses 5t and 55 of sullicient Width to receive compression rings. 58 and 59 respectively, in addi-` tion to the ringlike members 5l and 57. The combination of such support and independent compression rings, together with the rings and cross bar 53, proves to be advantageous in actualV practice. My compression and carbon shearing device is preferably arranged about the rotary valve at each engine port and hence at each of the `ex haust ports 4:2 and d3 in a conduit 37 and 44 and 45 in the conduit 38. In Fig. 3 l. have illustrated the passage 60 to receive the spark plug, which is provided in each cylinder, as, of course, will be understood.

As illustrated in Fig. 6, l have shown a novel forni of combined compression ring, carbon shearing, and oiling device, which' may' be utilized as a modification of the carbon shearing and compression member illustrated in Fig. 4i'. Each section of my rotary valve may be provided with airal. groove 65, cut in the outer surface o the valve section and in a spiral to clear the several ports 39, 83, 4:3, in which groove is a spiral expansible ring 66. Such groove and ring 66 may extend throughout the en tire length of the rotary valve section and while it may be employed in combination. with the compression device of Fig. d, the same may also be used independently. So far as l am informed, it is a distinct novelty in this art to provide, in 'a rotary valve for internal combustion engines, a spiral groove and an expansible compressionring fitted in said groove; also to provide such a groove `and ring which-will be so arranged and constructed as to constitute an effective com pression device between the ports of the addition to these features, the groove and' spiralv ring may also bel advantageously utilized to act asian oil distributing device.

My improved 'rotary valve construction, as herein explained, eliminates the friction of the valve turningv in its seat l2 by having sections at the ports, thus preventing leukage, or the like. The arrangement of at least a pair of cylinders `and the exhaust conduit controlling such pair with the widened openings 50, producing a substantially continuous flow ofexhaust gases and acts largely as a mumer for the engine.

My invention is further described in the form of claims as follows:

1. An internal combustion engine having a plurality of cylinders, a hollow rotary valve extending adjacent at least two of said cylinders, a casing therefor in which said valve is adapted to rotate, means to rotate the valve in timed relation with the engine cylinders, said valve having an exhaust conduit extending longitudinally therethrough and adapted to register, at

either end, with the exhaust of a cylinder,

a central outlet from said exhaust conduit substantially midway of its length, heat insulating means surrounding a portion of the exhaust conduit adjacent the outlet and separatingthe hollow valve into a plurality of fuel supply portions, and supply ports from each of said fuel supply port/ions into the adjacent engine cylinders. j

2. `Aninternal combustion engine having a plurality of cylinders, a hollow rotary valve extending Iadj acent at least two of said cylinders, a casing therefor, in which said valve is adapted to rotate, means to rotate the valve in timed relation with the engine cylinders, said valve having an exhaust conduit extending longitudinally there through and adapted to register, at either end, with the exhaust of a cylinder, a central outlet from said exhaust conduit substantially midway of its length, heat insulating means surrounding a portion of the exhaust conduit adjacent the outlet and separating lthe hollow valve into a plurality df fuel supply portions, fuel supply openings from each end of said valve into said supply por- `tions,a port from said fuel supply portion adapted to register with the single port in the adjacent cylinder in timed relationwith the registering of the exhaust port therewith, an enlarged circumferential recess in reduced portions #tl and 4:9, simplifying the the valve casing adjacent the central ex- 11e machining'of both valve and seat, providing free expansion foreach section, and facilitating assembling and removal of the sections, as Well as greatly simplifying the manufacture for both engine and valve casing. I am enabled to utilize a single port in each cylinder for both supply and ex haust and a single exhaust port through the casing for leach vpair of cylinders. The

haust port and compression members carried by the rotaryl valve at either side of said recess'.

The combination with an internal combustion engine and its cylinders 'of a rotary valve and a casing therefor, exhaust ports therethrough, and a compression device adjacent an exhaust port consisting in a plurality of inherently expansible split rings asbestos packing largely prevents undue rigidly united by a single squared cross-bar heating and such reduction in the continu-- ous heating and cooling of the valve sections insures even running as well as strength to the valve and eliminates the danger of the exhaust conduits separating from the valve joining said rings at the split portion of each. ring. the free length of the expansible ring members causing an edge of sald crossbar to be normally forced outwardly against the inner Walls of said valve casing and the outer edge will constitute a carbon shearing edgey to prevent the formation, and remove as formed, the carbon adjacent said exhaust port. f

4. An internal combustion engine having a plurality of cylinders, a hollow rotary valve adjacent two or more of said cylinders, a casing for said valve, means to rotate the valve inv timed relation with the engine, said rotary valve being adapted to receive, conduct and control theA supply and exhaust from said cylinders, and having an exhaust pipe extending longitudinally Within the hollow valve with means adjacent either end to receive the exhaust from a cylinder, to- 15 gether with an outlet from said exhaust pipe through said valve dividing the supply portion substantially midway of its length. In testimony whereof, I have signed my name to this specification, in the presence 20 of two subscribing Witnesses.

HENRY H. GOVE.

Witnesses:

JAMES R. HOUDER, HAROLD J. CLARK. 

